<template>
      <el-container class="home-container">
<!--        头部区域-->
        <el-header>
          <div>
            <img src="../assets/heima.png">
            <span>电商后台管理系统</span>
          </div>
          <el-button type="info" @click="logout">退出</el-button>
        </el-header>
<!--        页面主体区域-->
        <el-container>
<!--          侧边栏-->
          <el-aside :width="isCollapse ? '64px':'200px'">
            <div class="toggle-button" @click="toggleCollapse">|||</div>
<!--            侧边栏菜单区域-->

            <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF" :unique-opened="true" :collapse="isCollapse"
                     :collapse-transition="false" :router="true" :default-active="activePath">
<!--              一级菜单-->
              <el-submenu :index="item.id+''" v-for="item in menuList" :key="item.id">
<!--                一级菜单的模板区域-->
                <template slot="title">
<!--                  图标-->
                  <i :class="iconsObj[item.id]"></i>
<!--                  文本-->
                  <span>{{item.authName}}</span>
                </template>
<!--                二级菜单-->
                <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
                  <template slot="title">
                    <i class="el-icon-menu"></i>
                    <span>{{subItem.authName}}</span>
                  </template>
                </el-menu-item>
                </el-submenu>
            </el-menu>
          </el-aside>
<!--          右侧内容主体-->
          <el-main>
<!--            路由占位符-->
            <router-view></router-view>
          </el-main>
        </el-container>
      </el-container>

</template>

<script>
  export default {
    data() {
      return {
        //左侧菜单数据
        menuList: [],
        iconsObj: {
          '125': 'iconfont icon-users',
          '103': 'iconfont icon-tijikongjian',
          '101': 'iconfont icon-shangpin',
          '102': 'iconfont icon-danju',
          '145': 'iconfont icon-baobiao',
        },
        //是否折叠
        isCollapse: false,
        //被激活的链接地址
        activePath:''
      }

    },
    name: 'Home',

    // 点击按钮，切换菜单的折叠与展开

    created () {
      this.getMenuList()
      this.active=window.sessionStorage.getItem('activePath')
    },



    methods:{
      logout(){
        window.sessionStorage.clear();
        this.$router.push("/login")
      },
      //获取所有的菜单
      async getMenuList(){
        const {data:res}=await this.$http.get('menus')
        if(res.meta.status!==200) return this.$message.error(res.meta.msg)
        this.menuList=res.data
        console.log(res)
      },
      toggleCollapse(){
        this.isCollapse=!this.isCollapse

      },
      //保存链接的激活状态
      saveNavState(activePath){
        window.sessionStorage.setItem('activePath',activePath)
        this.activePath=activePath
      }
    },





  }
</script>

<style scoped>
  .home-container{
    height: 100%;
    width: 100%;
  }
  .el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #eeeeee;
    font-size: 20px;
  }
  div{
     display: flex;
     align-items: center;
   }
  span{
    margin-left:15px;
  }
  .el-aside{
    background-color: #333744;

}
  .el-menu {
    border-right:none;
  }
.el-main{
  background-color: #EAEDF1;
}
.iconfont{
  margin-right: 10px;
}
  .toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    color: #ffffff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
  }

</style>
